Run Focal i386 autopkgtests locally

[Sebastien Bacher]

Hey Steve, Julian,

I was reading again those steps Christian shared a while ago and noticed 
the current archive autopkgtest version still doesn't implement the '-a' 
option.
It seems 
https://code.launchpad.net/~ubuntu-release/autopkgtest/+git/development/+merge/376169 
got an ack 3 years ago, is there anything blocking the merge?

I've added the notes on 
https://wiki.ubuntu.com/ProposedMigration#How_do_we_debug_i386_issues 
because it's not the first time I have to figure that again and it's 
probably the same for others. It would be nice it things working with 
the archive version of autopkgtest

Cheers,
Sebastien

Le 06/02/2020 à 16:37, Christian Ehrhardt a écrit :
> Hi,
> The i386 removal works great and after the dust settled it comes 
> mostly down to adding a few more hints in recent weeks. But sometimes 
> there are i386 tests that are valid to run, but fail and need debugging.
>
> If you happen to face such a case the old common pattern won't work 
> anymore:
>
> $ sudo autopkgtest-buildvm-ubuntu-cloud -a i386 -r bionic -s 15G
> $ sudo ~/work/autopkgtest/autopkgtest/runner/autopkgtest <YOUR>.dsc \
>   -- qemu ~/work/autopkgtest-focal-amd64.img
>
> The above was fine in the past, but with Focal you that won't work due to:
> $ sudo autopkgtest-buildvm-ubuntu-cloud -a i386 -r focal -s 15G
> Downloading 
> https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-i386.img...
> No image exists for this release/architecture
>
> Steve was so kind to help me with the case I was facing and after a 
> bit I learned how to locally run my i386 tests in a VM and wanted to 
> share that with you.
>
> First of all, you probably need a more recent autopkgtest to get the 
> features you need.
> So you need to clone git and run it from there.
>
> $ git clone 
> git+ssh://paelzer@git.launchpad.net/~ubuntu-release/autopkgtest/+git/development 
> <http://paelzer@git.launchpad.net/~ubuntu-release/autopkgtest/+git/development>
> [for me that is in ~/work/autopkgtest/autopkgtest]
>
> And then - since you only have amd64 images - to run it you have to add
> # to select the architecture for the test
>   -a i386
> # to get the arch available in the test env before the testing starts
>   --setup-commands="dpkg --add-architecture i386; apt-get update"
>
> Overall for me it then worked like:
> $ sudo ~/work/autopkgtest/autopkgtest/runner/autopkgtest <YOUR>.dsc \
>   --setup-commands="dpkg --add-architecture i386; apt-get update" -a 
> i386 \
>   -- qemu ~/work/autopkgtest-focal-amd64.img
>
> I hope this helps some other people as well.
> And if anyone knows more tweaks to get this local i386 test to run 
> even better please reply and let us all know.
>
> P.S. of course my commandline never is that simple, the above is just 
> for illustration.
> In reality it was more like:
> $ sudo ~/work/autopkgtest/autopkgtest/runner/autopkgtest 
> --no-built-binaries --apt-upgrade --apt-pocket=proposed=src:re2c 
> --setup-commands="dpkg --add-architecture i386; apt-get update" 
> --shell-fail -a i386 re2c_1.3-1.dsc -- qemu --qemu-options='-cpu host' 
> --ram-size=2048 --cpus 2 ~/work/autopkgtest-focal-amd64.img
>
> --
> Christian Ehrhardt
> Staff Engineer, Ubuntu Server
> Canonical Ltd
>
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